Quick-dry high-strength peelable film for radioactive surface decontamination and preparation method thereof

Abstract

The invention discloses a quick-dry high-strength strippable film for radioactive surface decontamination, which is prepared from the following raw materials in parts by weight: 20-30 parts of film forming matter, 30-40 parts of industrial alcohol, 5-10 parts of decontaminant, 5-10 parts of reinforced fiber, 0.4-1 part of dispersing agent, 0.1-1 part of defoaming agent, 1-2 parts of coalescing agent and 20-30 parts of deionized water, and the film forming substance is at least one of aliphatic polyurethane acrylic acid, polyisoprene high-elasticity emulsion, polypropylene glycol or waterborne polyurethane resin.

Description

technical field [0001] The invention relates to the field of radioactive pollution decontamination, in particular to a quick-drying high-strength peelable film for radioactive surface decontamination and a preparation method thereof. Background technique [0002] During the operation and decommissioning of nuclear facilities, although a series of radiation protection measures have been taken to reduce the exposure dose to the lowest possible level reasonably achievable, it is still impossible to rule out the radioactive contamination of the surface of the facility. It has been shown in practical work that decontamination plays an essential role in the operation and decommissioning of nuclear facilities. [0003] Decontamination of nuclear facilities refers to the operation of removing all or part of the polluted radionuclides from the surface or interior of radioactive pollutants by different means, so as to prevent and reduce the harm of radionuclides to people and the envi...

AI Technical Summary

Problems solved by technology

[0009] However, among the coatings prepared in the prior art, some coatings have poor peeling properties for different substrate surfaces, and need to be peeled off after many times of film formation, which is time-consuming and laborious in use. For example, in the prior art, Document No. "CN108034324B" discloses "a radioactive decontamination high-strength peelable film, its preparation method and application". In the comparison of the peelability of the peelable film in Table 3 in its specification, it can be seen that the surface of the rusted metal, smooth The peeling effect of the concrete surface and the rough concrete surface is poor, and the poor peeling effect is due to the poor film-forming effect of the peeling film on the surface of the substrate.

[0010] In addition, among the coatings prepared in the prior art, some coatings do not need to be peeled off manually, and can be broken and fallen off by themselves. Preparation and use of detergent", the self-brittle film prepared by this detergent does not need to be manually peeled off, but as a self-brittle film, it is greatly affected by the ambient humidity when the film is self-brittle, and cannot be quickly removed. dry

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